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New 4N5906 Spring-Valve Replacement suitable for Caterpillar Equipment
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Description for 4N5906 Engine Valve Spring
â–¶Specification for 4N5906 Engine Valve Spring
â–¶Exact Fit Guarantee for 4N5906 Engine Valve Spring
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Customer Reviews
The best supplier ever we mainly deal with most rare needed parts .. i highly recommend .. they are very very honest
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I don't know who I spoke with, but they were helpful. We will be buying those parts shortly.
Quality Caterpillar parts
Very fast delivery and respons from Propel Parts
This is my second time that I bought something from it, first time delivery time was in one week from US to Serbia
Satisfied Customer.
I made my first purchase from Propel Parts last week. I was very happy with the response time and the delivery was fast, fast, fast! Also, the quality of the product is superb and at a great low price.
Keep up the great work!
Very knowledgeable and quick to quote parts.
Very quick to respond to parts quotes. Knowledgeable and Polite, and very quick shipping. Definitely will purchase parts from these guys in the future.
Fast response and very attentive! Thanks Deb.
The gentleman was very helpful
They are great !
Grateful I found this company!
I’m grateful I found this company! They answer the phone every time plus the parts are packaged very well!! Even the angriest mailman couldn’t damage your parts! lol The parts showed up as planned and for being aftermarket the quality seems to be good!! The warranty is the same as CAT. Thank you Daniel!!!
100% excelente
Product Questions
Frequently Asked Questions
What is the Caterpillar 4N5906 valve spring used for?
The Caterpillar 4N5906 valve spring is a high-quality aftermarket engine component designed to support proper valve operation and maintain dependable valve train performance. It is manufactured to meet or exceed OEM specifications for durability and reliable engine operation.
What are the benefits of the 4N5906 valve spring?
- Helps maintain proper valve movement and tension
- Supports dependable valve train operation
- Manufactured from durable materials for long service life
- Designed to meet or exceed OEM specifications
- Suitable for demanding heavy-duty engine applications
Is the 4N5906 valve spring compatible with multiple Caterpillar engines?
Yes, this valve spring may fit various Caterpillar engine models depending on the valve train configuration and application requirements. Check your manual or reach out to Propel Parts for help verifying fitment.
Why is replacing worn valve springs important?
Replacing worn valve springs helps maintain proper valve timing and movement, reduce engine inefficiencies, and support dependable engine performance.
Does the 4N5906 valve spring meet OEM standards?
Yes, this aftermarket replacement is designed to meet or exceed OEM specifications for fit, durability, and reliable valve train performance.
Can damaged valve springs affect engine reliability?
Yes. Worn or damaged valve springs may contribute to improper valve operation, engine misfires, reduced power, and increased maintenance needs.
Are related Caterpillar engine spring components available from Propel Parts?
Yes. Propel Parts carries a variety of replacement springs and valve train components for Caterpillar engines. You can also check the Caterpillar Equipment Spring Valve 4N5905 for another related replacement option.
Compatible Models
This 4N5906 Engine Valve Spring is compatible with the following models:
3406, 3406B, 3406C, 3408, 3408B, 3408C, 3408E, 3412, 3412C, 3412D, 3412E, 3516B, 16G, 245, 24H, 5110B, 589, 621, 621B, 621F, 623E, 623F, 627B, 627E, 627F, 631D, 631E, 631G, 633E II, 637D, 637E, 637G & more...
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We know equipment downtime costs money, so fast and reliable shipping is a priority at Propel Parts. Orders placed on weekdays before 3:00 PM ET typically ship the same day, with expedited delivery options available for many locations when time is critical.
We ship across the U.S., Canada, and over 130 countries worldwide, helping customers keep machines running wherever they operate. Available shipping methods and delivery estimates are shown at checkout so you can select the option that best fits your timeline.
Tracking information is emailed within 24–48 hours after your order is processed, giving you full visibility from dispatch to delivery and peace of mind that your parts are on the way.
Easy Returns
Our refund policy is simple. We offer a 30-day, no-hassle return policy, and we make every effort to provide the best service and highest-quality parts possible. If you’re not fully satisfied with your purchase, you may return it within 30 days for a refund. Full details are available on our Returns Policy page.
Warranty
Buy with confidence. All parts from Propel Parts are covered against material or manufacturer defects for 12 months from the original invoice date. We stand behind every part we sell, so you can count on reliable performance and dependable support. Full details are available on our Warranty Policy page.
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